Type-writing machine.



G. F. LUNDEBBRG.

TYPE WRITING MACHINE;

APPLICATION 1 11.31) MAY 28, 1912.

I 1,062,019. v Patented May 20, 1913.

- is a specification. I

-. UNITED- srnrnsrnrnnr ICE;

CARL F. LUNDEBEBG, OF HARTFORD, CONNECTICUT, ASSIGNOR '10 UNDERWOOD TYPE- WRITER COMPANY, NEW YORK, N: Y., A CORPORATION OF DELAWARE.

' TYPE-WRITING MACHINE.

' Specification of Letters Patent. i

To all whomit may concemrf, v

Be, it known that :I, CARL F. LUNDEBER a citizen of the'United Stat cs, residing in Hartfordfln the count'yof Hartford and State of Connecticut, have invented certain new and .useful. Im rovements in Type Writing Machines, 0 which the following 2 This invention relates to typewriting machines, and more. particularly to line-spac ing mechanisms wl1erein the;platen may be to move the paper any released or unclutched from the line-space wheel, and adjustedielatively' thereto so as,

desired fraction of a full -line-space.-

The principal; object of the present in-- vention is to provide between the platen and linespace whee1,1 a releasable connection, which is simple in construction, inexpensive,

,neatin appearance. and'readil-y applicable to existing types of machines. I i

The line-space wheel is loose and has attached thereto a head having do-gs'slidable in ways formed therein. These dogs, have Wedgeshaped teeth engaging theteeth of'a -wheel connected to the-platenand situated in a recessin the head. On one side the dogs have pins projecting therefrom through toothed Wheel. I dogs have-conical projections which are en-' gaged'by a slots in the head, the pins of opposite dogs bein connected to each other by springs holdmg'the dogs in engagement with the On the opposite side the disk having a beveled rim, to

throw] the dogs out of contact with thetoothed wheel so as to perinitadjustment of i In the accompanying drawings;'Figur'e 1'.

the" platen relative to-the line-space wheel.

A cover plate is fastened'to the head and incloses the dogs and toothed wheelt Other features and adyantages will here'' inafter appear, V

is a perspective-wiew of the line-spacing mechanism of an Underwood writing mam chine with the present inVention-JapPlied thereto. Fig. 2 is a sectional elevation illus-- .tra ting the parts of the'connectlon or c oupling inlengagement. "Fig. 3- is aseCtional elevation partly broken awamillustrating 1 along lind'b-b of Figi2; p tion taken alongline a-a of Flg', 2,

the parts of the connection lo'rcouplingout ofengagement. 'Fig. 4= is a I F1g.15 1s a sec- Figifi is a. detail erspective' View showing'parts (it th qup pgfdetgcliqd .aqm ea h-et e section taken Fig. 7 is a diagrammatic view-illustrating a g i g 2 v I 'ratenteqna e ieie; Application filedlllay 28,"1 912. Ser'ia1No;700,1 58

the spacing of the'dogs relative to the;

teeth'o-f the wheel."

1 The usual line-space. operatinglei eril is mounted on the carriage 2 of a typewriting pawl 4 engaging the teeth 50f line-space v 9 mach1ne .an'd actuates a bar 3 carrying. a

wheel 6 connected to the platen. axle 7, upon which is fixed the platen 8.- Detent9, engaglngfthe teeth of the line-space wheel,

holds thelatter in adjusted line-spacing position. All of this mechanism is found in the usual type of Underwood writingma r chine.

' 1 The'line-space wheel is loose upon the platen axle 'Z and is connected to andfdis 1 connected'from the axle as follows: Project ing outward from the platen turning knob 10 is a fingers-piece 11. held outwardly by a spring 12 seated in a recess 13 formed inthe knob; ,pConnectedto this finger-piece is a",

pair-of rods 14L passing freely through apertures 15 formed in the knob At their inner ends theserods are" connected to a disk 16 slidably: mounted on platen shaft 7 and formed'with a flange or rim 17 having a beveled edge 1'8fadapted to engage a plurality of conical pins or projections 19 extendingfrom dogs 20. The latter have Wedge shaped teeth engaging the. correspondingly shaped teeth 21 of a i the platen axle.

Norm ally the 11 is pressed inward by the operator against the 'tension' of spring. 12, the disk 16is slid tions 19, and disengaging the dogs from the 2 dogs 20 are held in engage. ment with toothed wheel 21 by springs hereinafter to be described." When finger-piece wheel 21. secured to,

teeth of thewheel. These dogs 20 are slid-* 3 ably mounted in radial ways23 formed ina' I head 22 secured to'a' rim 22 extending from the line-space Wheel and arenormally-held in engagement with the toothed wheel 21 by'springs 2 1 attached to pins 25 projecting.

inwardly from the dogs through slots 26 formed'in head 22 atthe'bottom of the ways.

These pins 25 extend within the rimf22, which, together with theplate 22 and linespace-wheel 6, forms. a casing completely inclosing the'pins and thesprings 24.- The 'ends' ofithe latter are connected to the pins of opposite'dogs drawing them toward each other into engagement with the toothed 61S mndihgfiom said dogs" and res'pectivelyengage a' forward "and a rear face of a do, considering forward as the direction in ica'ted by the arrow.' In any position of adjustment of the toothed wheel, one

15 dog engages a forward andanother dog a rear face"'of 'a I tooth, thus clamping the toothed wheel 21 securely relative to. the line-space wheel.

' Variations may be resorted to withinthe zo'scope of the inventiomfand portions of the improvements may be used without others.

Having thus described my invention, I

claim: I

-1. In a typewritin machine, a revoluble 25 platen, a line-space wheelloose on the platen axle having a rim extending therefrom, a head attached to said'rim, do s mounted in radial ways in said head, sai pinspro-jecting within saidrim, springsengaging. said pins, and a toothed 'fwheelconnected to saidplaten and engaged by said dogs, said toothed recess in said head.

2, In a typewriting machine, a platen axle,

.35 a line-space wheel loose on said axle, a head secured to said wheel, said I, head having radial ways formed therein, and a central recess in continuation with. said 'ways, a toothed wheel connected to the axle and i 40 situated within said recess, and a plurality of dogs slidably mounted in said ways and movable radially inward into engagement with saidtoothed wheel.

3. In a typewriting machine,'a platen axle,

4 a line-space wheel loose on said axle, a head secured to said wheel, said head havmg radial ways formed therein, and a cen- .tral recess in continuation with said ways,

a toothed wheel connected to the axle and situated within saidrecess,-a plurality of dogs slidably mounted in said ways and movable radially inward to engage said toothed wheel, projections extending out-- wardl from said dogs, and a member hav; ing a beveled edge slidably mounted on the platen axle and adaptedto engage said proections andmove'th'em radially outward to released position;- 1 a v 4. In a ty'pewritingimachine, a platen axle, a line-space wheel-loose on said axle, a rim secured to said-wheel, a head secured to said rim, a pl'uralit of dogs mounted on said .fhead, a toothe wheel secured to jthe-axl e and engaged by the ;dogs,.project1 ons exwithin said rim,

illustrating the spac space fromagainst rotation dogs havingwheel being situated in a.

projections of oppo in engagement with projections extending outwardlyiafrom said dogs, and a disk havins"; beveleded'ge slidably mounted on the pi n axle'and'adapted to engage said out wardlyjextending projections to force the kdGgS out of engagement with the wheel.

5. Inc. typewrit-ing machine, a platen axle,

springs fastenedlto the sitev dogs to held them the toothed j wt el,

aline-space wheel-loose on said axle,-a rim secured to said wheel, a head secured to said rim, a plurality ot dogs mounted, on said head, a, toothed wheel secured to the axle and engaged by the dogs: in engagement with the toothed wheel, conical projections extending outwardly from sald dogs, and a disk having a beveled edge slidably mounted on the platen axle and adapted to engage said outwardly extending co'nical projections, to force the dogs out of engagement with the wheel. 6.111s typewriting-machine, a platen axle, a line-space wheel loose on said axle, a head secured to said wheel, said head having radial ,way's formed therein and a central recess in continuation with opposite ways being substantially in longitu inal 'alinement and extending completely across the face ofthe head, a toothed wheel connected to the axle and situated within said recess, and dogs slidablymounted in said Ways engaging said toothed 'whee1.'"' '7. In a typewriting machine, a platen axle, a line-space wheel loose on said axle, a head secured to said wheel, said head having radial'ways formed therein and a central recess in continuation with said ways, a toothed wheel connected ated Within said recess, a plurality of dogs slidably mounted in said ways and movable radially inwardinto engagement with said toothed wheel, and a cover plate secured to said head to inclo-se the dogs and toothed wheel.

8. In a typewriting machine, the combination of aplaten and its axle, a line-space tral recess,

wheel loose on the axle, a head on said axle, a flange connecting said head and line-space wheel, said head being formed in its outer face with radial recesses or ways and a cena toothed wheel seated in said central recess and secured to the platen axle, sliding dogs mounted in said ways and adapted to cooperate with said toothed wheel, said dogs having projections extending through openings in said head, springs connected to the said extensions and located in the space between said head and the linespace wheel, and means for operating said dogs in opposition to said springs.

9. The combination with a platen and a line-space Wheel, of a connecting clu tch com prising a notched Wheel,

movable independently of one another to engage said notched wheel to lock the huethe dogs, springs to hold .to. the axle and situsaid Ways, the

a series of dogs 'theymaybe operated; and a finger piece FRANK A. CooK.

,0 9 v o -o a space wheel phi-5n; a disk h'eving' having a, part to engage all 6i said aims to I radial grooves in which the do are"s1idcam the dogs in a manner to release the able, andmeans on the side of t e disk opplaten.

posite the said grooves to move said dogs to CARL LUNDEBERG.- effective positions; said dogs having'cams Witnesses:

projected through slotsjin the disk, whereby W. M. DYORKMAN,

Copies ot-thh patent may be obtained. for five gents each, by addressing the Commissioner 0L Patente, Washington, 20.0. 

